package com.rrd.dw.mr.all;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;
import org.apache.hadoop.hbase.mapreduce.TableMapper;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.MultipleOutputs;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;

import com.rrd.dw.utils.DateUtil;
import com.rrd.dw.utils.HBaseUtil;
import com.rrd.dw.utils.MD5Util;

/**
 * 资信数据
 * @author liubaoxin
 *
 */
public class ExportNFCSDataToDW extends Configured implements Tool {
	public static final String CRT001 =  "\001";
    public static final String[] DATA_COLUMNS = { "name", "certtype","certno", 
        "reason", "createtype","data" };//inf

    public static final String[] JOB_COLUMNS = {  "finished:boolean",
        "requested:boolean", "successful:boolean", "start_time:date",
        "end_time:date", "system_id", "query", "try_times:int", "type",
        "message", "code" };//job

    @Override
    public int run(String[] args) throws Exception {
        Properties prop = new Properties();
        try (InputStream is = this.getClass().getClassLoader()
            .getResourceAsStream("hbase.properties");) {
            prop.load(is);
        }

        Job job = Job.getInstance(HBaseConfiguration.create(this.getConf()));
        Configuration conf = job.getConfiguration();
        conf.set("hbase.zookeeper.quorum",
            prop.get("hbase.zookeeper.quorum").toString());
        conf.set("hbase.rootdir", prop.get("hbase.rootdir").toString());

        conf.set("mapreduce.map.memory.mb", "3072");
        conf.set("mapreduce.reduce.memory.mb", "5120");
        conf.set("hbase.client.scanner.timeout.period", "120");
        conf.set("mapreduce.output.fileoutputformat.compress", "true");
        conf.set("mapreduce.output.fileoutputformat.compress.type", "BLOCK");
        conf.set("mapreduce.output.fileoutputformat.compress.codec",
            "org.apache.hadoop.io.compress.GzipCodec");
        conf.set("io.compression.codecs",
            "org.apache.hadoop.io.compress.GzipCodec");
        conf.set("mapreduce.task.io.sort.factor", "10");
        String[] otherArgs = new GenericOptionsParser(conf, args)
            .getRemainingArgs();
        if (otherArgs.length != 4) {
            System.err
                .println("Usage: DataExportTool <out> <start_time> <end_time>");
            return -1;
        }
        Long startTime = HBaseUtil.parseDate(otherArgs[1]).getTime();
        Long endTime = HBaseUtil.parseDate(otherArgs[2]).getTime();
        String isAll=otherArgs[3];
        job.setJarByClass(ExportNFCSDataToDW.class);
        List<Scan> scans = new ArrayList<>();

        Scan scan = new Scan();
        scan.setCacheBlocks(false);
        scan.setCaching(200);
        scan.setMaxVersions(1);
        scan.setAttribute(Scan.SCAN_ATTRIBUTES_TABLE_NAME,
            Bytes.toBytes("nfcs_report"));
       
        if(isAll.equals("ALL")){
        	System.out.println("进行全量同步！！！！！！！");
        }else{
        	System.out.println("进行增量同步！！！！！！！");
//        	scan.setFilter(filterList);
        	 scan.setTimeRange(startTime, endTime + 14400000);
        }
        scans.add(scan);

        TableMapReduceUtil.initTableMapperJob(scans,
            ExportNfcsDataToDWMapper.class, Text.class, Text.class, job);
        FileOutputFormat.setOutputPath(job, new Path(otherArgs[0]));
        MultipleOutputs.addNamedOutput(job, "baseinfo", TextOutputFormat.class,
            Text.class, Text.class);

        job.setReducerClass(ExportNfcsDataToDWReducer.class);
        job.setNumReduceTasks(3);
        return job.waitForCompletion(true) ? 0 : 1;

    }

    public static void main(String[] args) throws Exception {
        Configuration conf = HBaseConfiguration.create();
        int res = ToolRunner.run(conf, new ExportNFCSDataToDW(), args);
        System.exit(res);
    }

    public static class ExportNfcsDataToDWMapper
            extends TableMapper<Text, Text> {
    	private Text k = new Text();
    	private Text v = new Text();
    	private String timestampstr=null;
    	private Cell dataCell = null;
    	private String type = "";
    	private String field = "";
        @Override
        protected void map(ImmutableBytesWritable key, Result value,
                Context context) throws IOException, InterruptedException {

            StringBuffer sb = new StringBuffer("");
            Object[] rowkey = HBaseUtil.decodeRowkey(key.get());
            if (rowkey == null) {
                return;
            }
            this.timestampstr = DateUtil.formateDateStr(new Date(Long.parseLong(rowkey[0].toString())));
            String job_id = rowkey[1].toString();
            dataCell = value.getColumnLatestCell(Bytes.toBytes("inf"),
                    Bytes.toBytes("certno"));
            String id_no= dataCell==null?"": HBaseUtil.getValue(CellUtil.cloneValue(dataCell)).toString();
            String id=MD5Util.getMd5(job_id+timestampstr+id_no);
            sb.append(id).append(CRT001).append(job_id).append(CRT001).append(timestampstr).append(CRT001);
            //data基本信息
            for (String str1 : DATA_COLUMNS) {
                String[] fieldArray = str1.split(":");
                if (fieldArray.length > 1) {
                    field = fieldArray[0];
                    type = fieldArray[1];
                } else {
                    field = fieldArray[0];
                    type = "string";
                }
                dataCell = value.getColumnLatestCell(Bytes.toBytes("inf"),
                    Bytes.toBytes(field));
                if (dataCell != null) {
                    Object dataObject = HBaseUtil.getValue(type,
                            CellUtil.cloneValue(dataCell));
                    if("data".equals(field)){
                        sb.append(dataObject.toString().replaceAll("\\\"","\""));
                    }else{
                        sb.append(dataObject.toString());
                    }
                }
                sb.append(CRT001);
            }
            //job信息
            for (String str1 : JOB_COLUMNS) {
                String[] fieldArray = str1.split(":");
                if (fieldArray.length > 1) {
                    field = fieldArray[0];
                    type = fieldArray[1];
                } else {
                    field = fieldArray[0];
                    type = "string";
                }
                dataCell = value.getColumnLatestCell(Bytes.toBytes("job"),
                    Bytes.toBytes(field));
                if (dataCell != null) {
                    sb.append(HBaseUtil.getValue(type,
                        CellUtil.cloneValue(dataCell)));
                }
                sb.append(CRT001);
            }
            k.set(id);
            v.set(sb.substring(0,sb.length()-1).replace("\n", " "));
            context.write(k,v);
            sb = null;
        }

    }

    public static class ExportNfcsDataToDWReducer
            extends Reducer<Text, Text, Text, Text> {
        private MultipleOutputs<Text, Text> mos;
        private NullWritable k = NullWritable.get();
        
        @Override
        protected void setup(Context context)
                throws IOException, InterruptedException {
            this.mos = new MultipleOutputs<>(context);
        }

        @Override
        protected void cleanup(Context context)
                throws IOException, InterruptedException {
            this.mos.close();
        }

        @Override
        protected void reduce(Text key, Iterable<Text> values, Context context)
                throws IOException, InterruptedException {
            for (Text val : values) {
                this.mos.write("baseinfo", k, val);
            }

        }
    }
}
